document.write( "Question 604151: A truck can travel 165 miles in the same time that it takes a car to travel 180 miles. If the trucks rate is 5 mph slower than the car's, find the average rate for each. \n" ); document.write( "
Algebra.Com's Answer #380989 by alicealc(293)![]() ![]() ![]() You can put this solution on YOUR website! Truck's speed = T \n" ); document.write( "Car's speed = C\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "T = C - 5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "165/T = 180/C \n" ); document.write( "165C = 180T \n" ); document.write( "(divide all by 15) \n" ); document.write( "11C = 12T \n" ); document.write( "11C = 12*(C - 5) \n" ); document.write( "11C = 12C - 60 \n" ); document.write( "60 = 12C - 11C \n" ); document.write( "60 = C\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So, the average speed of the car is 60 mph, and the truck is 60 - 5 = 55 mph\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |